Java Code Examples for com.itextpdf.text.pdf.PdfContentByte#setColorFill()

/**
 * The OP's original code transformed into Java
 */
void stampTextOriginal(InputStream source, OutputStream target) throws DocumentException, IOException
{
    Date today = new Date();
    PdfReader reader = new PdfReader(source);
    PdfStamper stamper = new PdfStamper(reader, target);
    BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA_BOLD, BaseFont.WINANSI, BaseFont.EMBEDDED);
    int tSize = 24;
    String mark = "DRAFT " + today;
    int angle = 45;
    float height = reader.getPageSizeWithRotation(1).getHeight()/2;
    float width = reader.getPageSizeWithRotation(1).getWidth()/2;
    PdfContentByte cb = stamper.getOverContent(1);
    cb.setColorFill(new BaseColor(255,200,200));
    cb.setFontAndSize(bf, tSize);
    cb.beginText();
    cb.showTextAligned(Element.ALIGN_CENTER, mark, width, height, angle);
    cb.endText();
    stamper.close();
    reader.close();
}
 

/**
 * 水印
 */
public static void setWatermark(MultipartFile src, File dest, String waterMarkName, int permission) throws DocumentException, IOException {
	PdfReader reader = new PdfReader(src.getInputStream());
	PdfStamper stamper = new PdfStamper(reader, new BufferedOutputStream(new FileOutputStream(dest)));
	int total = reader.getNumberOfPages() + 1;
	PdfContentByte content;
	BaseFont base = BaseFont.createFont();
	for (int i = 1; i < total; i++) {
		content = stamper.getOverContent(i);// 在内容上方加水印
		content.beginText();
		content.setTextMatrix(70, 200);
		content.setFontAndSize(base, 30);
		content.setColorFill(BaseColor.GRAY);
		content.showTextAligned(Element.ALIGN_CENTER, waterMarkName, 300, 400, 45);
		content.endText();
	}
	stamper.close();
}
 

/**
 * The OP's code transformed into Java changed with the work-around.
 */
void stampTextChanged(InputStream source, OutputStream target) throws DocumentException, IOException
{
    Date today = new Date();
    PdfReader reader = new PdfReader(source);
    PdfStamper stamper = new PdfStamper(reader, target);
    BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA_BOLD, BaseFont.WINANSI, BaseFont.EMBEDDED);
    int tSize = 24;
    String mark = "DRAFT " + today;
    int angle = 45;
    float height = reader.getPageSizeWithRotation(1).getHeight()/2;
    float width = reader.getPageSizeWithRotation(1).getWidth()/2;
    PdfContentByte cb = stamper.getOverContent(1);
    cb.setFontAndSize(bf, tSize);
    cb.beginText();
    cb.setColorFill(new BaseColor(255,200,200));
    cb.showTextAligned(Element.ALIGN_CENTER, mark, width, height, angle);
    cb.endText();
    stamper.close();
    reader.close();
}
 

/**
 * <a href="http://stackoverflow.com/questions/43870545/filling-a-pdf-with-itextsharp-and-then-hiding-the-base-layer">
 * Filling a PDF with iTextsharp and then hiding the base layer
 * </a>
 * <p>
 * This test shows how to cover all content using a white rectangle.
 * </p>
 */
@Test
public void testHideContenUnderRectangle() throws IOException, DocumentException
{
    try (   InputStream resource = getClass().getResourceAsStream("document.pdf");
            OutputStream result = new FileOutputStream(new File(RESULT_FOLDER, "document-hiddenContent.pdf")))
    {
        PdfReader pdfReader = new PdfReader(resource);
        PdfStamper pdfStamper = new PdfStamper(pdfReader, result);
        for (int page = 1; page <= pdfReader.getNumberOfPages(); page++)
        {
            Rectangle pageSize = pdfReader.getPageSize(page);
            PdfContentByte canvas = pdfStamper.getOverContent(page);
            canvas.setColorFill(BaseColor.WHITE);
            canvas.rectangle(pageSize.getLeft(), pageSize.getBottom(), pageSize.getWidth(), pageSize.getHeight());
            canvas.fill();
        }
        pdfStamper.close();
    }
}
 

/**
 * <a href="https://stackoverflow.com/questions/50121297/missing-colored-area-on-pdf-using-itext-pdf">
 * Missing colored area on pdf using itext pdf
 * </a>
 * <p>
 * This test shows how to mark a whole table row without the
 * marking hiding the existing content or vice versa.
 * </p>
 */
@Test
public void test() throws IOException, DocumentException {
    try (   InputStream resource = getClass().getResourceAsStream("document.pdf");
            OutputStream result = new FileOutputStream(new File(RESULT_FOLDER, "document-marked.pdf"))) {
        PdfReader pdfReader = new PdfReader(resource);
        PdfStamper stamper = new PdfStamper(pdfReader, result);

        PdfContentByte canvas = stamper.getOverContent(1);
        canvas.saveState();
        PdfGState state = new PdfGState();
        state.setBlendMode(new PdfName("Multiply"));
        canvas.setGState(state);
        canvas.setColorFill(BaseColor.YELLOW);
        canvas.rectangle(60, 586, 477, 24);
        canvas.fill();
        canvas.restoreState();

        stamper.close();
    }
}
 

@Override
public void onEndPage(PdfWriter writer, Document document) {
    if (active) {
        PdfContentByte cb = writer.getDirectContentUnder();
        cb.saveState();
        cb.setColorFill(color);
        cb.rectangle(document.left(), document.bottom() - offset,
                document.right() - document.left(), startPosition - document.bottom());
        cb.fill();
        cb.restoreState();
    }
}
 

@Override
public void onParagraphEnd(PdfWriter writer, Document document, float paragraphPosition) {
    if (active) {
        PdfContentByte cb = writer.getDirectContentUnder();
        cb.saveState();
        cb.setColorFill(color);
        cb.rectangle(document.left(), paragraphPosition - offset,
                document.right() - document.left(), startPosition - paragraphPosition);
        cb.fill();
        cb.restoreState();
    }
}
 

/**
 * <a href="http://stackoverflow.com/questions/43807931/creating-table-in-pdf-on-last-page-bottom-wrong-official-solution">
 * Creating table in pdf on last page bottom (wrong official solution)
 * </a>
 * <p>
 * Indeed, there is an error in the official sample which effectively
 * applies the margins twice.
 * </p>
 */
@Test
public void testCreateTableLikeUser7968180() throws FileNotFoundException, DocumentException
{
    Document document = new Document(PageSize.A4);
    PdfWriter writer = PdfWriter.getInstance(document,
            new FileOutputStream(new File(RESULT_FOLDER, "calendarUser7968180.pdf")));
    document.open();

    PdfPTable datatable = null;//createHeaderTable();
    //document.add(datatable);
    datatable = createFooterTable();

    drawTableAtTheEndOfPage(document, writer, datatable);

    // Marking the border
    PdfContentByte canvas = writer.getDirectContentUnder();
    canvas.setColorStroke(BaseColor.RED);
    canvas.setColorFill(BaseColor.PINK);
    canvas.rectangle(document.left(), document.bottom(), document.right() - document.left(), document.top() - document.bottom());
    Rectangle pageSize = document.getPageSize(); 
    canvas.rectangle(pageSize.getLeft(), pageSize.getBottom(), pageSize.getWidth(), pageSize.getHeight());
    canvas.eoFillStroke();

    document.close();
    System.out.println("done");
}
 

void enhance(PdfContentByte page, Collection<Rectangle2D> rectangles, Point2D point, BaseColor color)
{
    Rectangle2D best = null;
    double bestDist = Double.MAX_VALUE;

    for (Rectangle2D rectangle : rectangles)
    {
        double distance = distance(rectangle, point);
        if (distance < bestDist)
        {
            best = rectangle;
            bestDist = distance;
        }
    }

    if (best != null)
    {
        page.setColorFill(color);
        page.rectangle((float) best.getMinX(), (float) best.getMinY(), (float) best.getWidth(), (float) best.getHeight());
        page.fill();
        System.out.printf("    Best rectangle for %7.3f, %7.3f is %7.3f, %7.3f, %7.3f, %7.3f\n", point.getX(), point.getY(), best.getMinX(),
                best.getMinY(), best.getWidth(), best.getHeight());
    }
    else
    {
        System.err.printf("!!! No best rectangle for %7.3f, %7.3f\n", point.getX(), point.getY());
    }
}
 

static byte[] createSimplePatternPdf() throws DocumentException, IOException
{
    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    Document document = new Document();
    PdfWriter writer = PdfWriter.getInstance(document, baos);
    document.open();

    PdfContentByte directContent = writer.getDirectContent();
    Rectangle pageSuze = document.getPageSize();
    
    PdfPatternPainter painter = directContent.createPattern(200, 150);
    painter.setColorStroke(BaseColor.GREEN);
    painter.beginText();
    painter.setTextRenderingMode(PdfPatternPainter.TEXT_RENDER_MODE_STROKE);
    painter.setTextMatrix(AffineTransform.getTranslateInstance(0, 50));
    painter.setFontAndSize(BaseFont.createFont(), 100);
    painter.showText("Test");
    painter.endText();

    directContent.setColorFill(new PatternColor(painter));
    directContent.rectangle(pageSuze.getLeft(), pageSuze.getBottom(), pageSuze.getWidth(), pageSuze.getHeight());
    directContent.fill();

    document.close();

    return baos.toByteArray();
}
 

private void addTextAndImage(PcGtsType pc, int cutoffLeft, int cutoffTop, Image img, boolean imageOnly, ExportCache cache) throws DocumentException, IOException {
		lineAndColorList.clear();
		
		PdfContentByte cb = writer.getDirectContentUnder();

		cb.setColorFill(BaseColor.BLACK);
		cb.setColorStroke(BaseColor.BLACK);
		//BaseFont bf = BaseFont.createFont(BaseFont.TIMES_ROMAN, "UTF-8", BaseFont.NOT_EMBEDDED);
		if (!imageOnly){
			cb.beginLayer(ocrLayer);
			//cb.setFontAndSize(bfArial, 32);
			cb.setFontAndSize(mainExportBaseFont, 32);
					
			List<TrpRegionType> regions = pc.getPage().getTextRegionOrImageRegionOrLineDrawingRegion();
			
			/*
			 * use reading order comparator for sorting since at this time reading order is more trustable
			 * other sorting is not transitive and seldomly produces "Comparison violates its general contract" exception
			 */
//			Collections.sort(regions, new TrpElementReadingOrderComparator<RegionType>(true));
			TrpShapeTypeUtils.sortShapesByReadingOrderOrCoordinates(regions);
	
			for(RegionType r : regions){
				//TODO add paths for tables etc.
				if (r instanceof TrpTableRegionType){
					
					exportTable(r, cb, cutoffLeft, cutoffTop, false, cache);

				}
				else if(r instanceof TextRegionType){
					TextRegionType tr = (TextRegionType)r;
					//PageXmlUtils.buildPolygon(tr.getCoords().getPoints()).getBounds().getMinX();
					addTextFromTextRegion(tr, cb, cutoffLeft, cutoffTop, mainExportBaseFont, cache);
				}
			}
			
			//scale after calculating lineMeanHeightForAllRegions
			//lineMeanHeight = lineMeanHeight/scaleFactorX;
			
			cb.endLayer();
		}
				
		cb.beginLayer(imgLayer);		
		cb.addImage(img);
		cb.endLayer();
		
		if (highlightTags || highlightArticles){
			
			highlightAllTagsOnImg(lineAndColorList, cb, cutoffLeft, cutoffTop);
		}
		
		/*
		 * draw tag lines
		 */
		

		
//		addTocLinks(doc, page,cutoffTop);
	}
 

private void addUniformText(PcGtsType pc, int cutoffLeft, int cutoffTop, ExportCache cache) throws DocumentException, IOException {
		PdfContentByte cb = writer.getDirectContentUnder();
		cb.setColorFill(BaseColor.BLACK);
		cb.setColorStroke(BaseColor.BLACK);
	    /** The path to the font. */
	    //FontFactory.register("c:/windows/fonts/arialbd.ttf");
		//BaseFont bf = BaseFont.createFont("/fonts/arialbd.ttf", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
		
		cb.beginLayer(ocrLayer);
		//FontFactory.register("arialbd.ttf", "my_bold_font");
		//Font fontTest = FontFactory.getFont("arialbd.ttf", Font.BOLDITALIC);
		
		cb.setFontAndSize(mainExportBaseFont, 10);
				
		List<TrpRegionType> regions = pc.getPage().getTextRegionOrImageRegionOrLineDrawingRegion();
		
		/*
		 * use reading order comparator for sorting since at this time reading order is more trustable
		 * other sorting is not transitive and seldomly produces "Comparison violates its general contract" exception
		 */
//		Collections.sort(regions, new TrpElementReadingOrderComparator<RegionType>(true));
		TrpShapeTypeUtils.sortShapesByReadingOrderOrCoordinates(regions);
		
		float textBlockXStart = 0;

		int i = 0;
		for(TrpRegionType r : regions){
			//TODO add paths for tables etc.			
			if (r instanceof TrpTableRegionType){
				exportTable(r, cb, cutoffLeft, cutoffTop, true, cache);
			}
			else if(r instanceof TrpTextRegionType){
				TrpTextRegionType tr = (TrpTextRegionType) r;
				
				//compute average text region start
				//textBlockXStart = (float) (PageXmlUtils.buildPolygon(tr.getCoords().getPoints()).getBounds().getMinX());
				//double minX = PageXmlUtils.buildPolygon(tr.getCoords().getPoints()).getBounds().getMinX();
				//this should result in the the same value as the method in the line above which is deprecated
				double minX = tr.getBoundingBox().getMinX();
				double maxX = tr.getBoundingBox().getMaxX();
				double trWidth = tr.getBoundingBox().getWidth();
				
//				logger.debug("region "+ ++i);
//				logger.debug("region minX " + minX);
//				logger.debug("region maxX " + tr.getBoundingBox().getMaxX());

				//if there is only one text region at this vertical section start the text block at the second twelfth
				//if (hasSmallerColumn(regions, tr)){
				if (isOnlyRegionInThisRow(regions, tr)){
				//if (regions.size() == 1){
					logger.debug("only one region in this row!!");
					//indent start of text block under certain preconditions
					if (minX < twelfthPoints[1][0] && (twelfthPoints[1][0] < maxX && trWidth > twelfthPoints[2][0])){
						textBlockXStart = twelfthPoints[1][0];
					}
					//if textregion contains only one line this is probably a headline
					else if (tr.getTextLine().size() == 1){
						//logger.debug("tr.getTextLine().size() == 1 ");
						textBlockXStart = getPrintregionStartX((float) (minX), tr.getBoundingBox().getMaxX());
					}
					else if (twelfthPoints[2][0] < maxX && trWidth > twelfthPoints[3][0]){
						//logger.debug("twelfthPoints[2][0] < tr.getBoundingBox().getMaxX() ");
						textBlockXStart = twelfthPoints[2][0];
					}
					else{
						textBlockXStart = (float) minX;
					}
				}
				else{
					
					logger.debug("several columns found, minX of text region is : " + minX);
					//float startWithThisX = (float) (minX < smallerRegionMaxX ? smallerRegionMaxX : minX);
					//textBlockXStart = getPrintregionStartX((float) (startWithThisX));
					
					/*
					 * this is then used for all lines of a region as start point
					 */
					textBlockXStart = getAverageBeginningOfBaselines(tr);
					textBlockXStart += 40;

				}
				//logger.debug("textBlockXStart " + textBlockXStart);
				addUniformTextFromTextRegion(tr, cb, cutoffLeft, cutoffTop, mainExportBaseFont, textBlockXStart, cache);
			}
		}
		
		cb.endLayer();	
		
//		addTocLinks(doc, page,cutoffTop);
	}